package com.tiancai.handler;

import com.tiancai.constant.MessageConstant;
import com.tiancai.exception.BaseException;
import com.tiancai.result.Result;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import java.sql.SQLIntegrityConstraintViolationException;

/**
 * 全局异常处理器，处理项目中抛出的业务异常
 */
@RestControllerAdvice
@Slf4j
public class GlobalExceptionHandler {

    /**
     * 捕获业务异常
     * @param ex
     * @return
     */
    @ExceptionHandler
    public Result exceptionHandler(BaseException ex){
        log.error("异常信息：{}", ex.getMessage());
        return Result.error(ex.getMessage());
    }

    /**
     * 处理sql异常
     * @param ex
     * @return
     */
//     @ExceptionHandler
//     public Result exceptionHandler(SQLIntegrityConstraintViolationException ex){
// //        Duplicate entry 'zhangsan' for key 'employee.idx_username'
//         String message = ex.getMessage();
//
//         if(message.contains("Duplicate entry")){
//             String[] split = message.split(" ");
//             String username = split[2];
//             String msg = username + MessageConstant.ALREADY_EXISTS;
//             return Result.error(msg);
//         }else {
//             return Result.error(MessageConstant.UNKNOWN_ERROR);
//         }
//     }
}
